1X
- 1. X. 1905
- 1X Band
- 1X Technologies
- 1xBet
- Alberta Highway 1A
- Ares I-X
- Bell UH-1 Iroquois variants
- CD-ROM
- CDMA2000
- Evolution-Data Optimized
- GSC bus
- HTC One X
- Hutchinson River Parkway
- List of former state highways in Washington
- Multiplicative inverse
- One-X
- Onex (disambiguation)
- Saab 9-1X
- Single scull
- X1 (disambiguation)
- Xbox One X